High-Purity Ferrosilicon 72% FeSi72B
High-purity Ferrosilicon 72% FeSi72B has 72% silicon with low aluminum (<1%) and calcium (<0.5%), optimized for high-quality steel and stainless production. It qualifies for HTS 7202.21.50.00 as ferrosilicon containing 55-80% silicon in the 'other' category, distinguished by its impurity profile. Used in ladle metallurgy for precise alloying.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing over 80% silicon
Purer silicon ferrosilicon exceeding 80% Si moves to the higher silicon subheading.
If processed to 99%+ silicon metal
Refined silicon exceeding 99% purity is classified as pure silicon carbide/silicon compounds, not ferroalloys.
If ferrosilicon with ≤55% silicon
Lower silicon content ferrosilicon falls under the ≤55% silicon ferrosilicon subheading.
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Import Tips & Compliance
• Submit spectrometry reports proving low P/S (<0.04%) content, as high-purity specs prevent misclassification as standard grades
• Use ventilated containers to prevent self-heating; temperature certificates required for high-purity grades
Related Products under HTS 7202.21.50.00
Custom Blend Ferrosilicon 70-75% Mix
Custom Blend Ferrosilicon 70-75% is a plant-specific mix averaging 72.5% silicon, tailored for particular steel chemistry requirements. Classified HTS 7202.21.50.00 as 'other' within 55-80% silicon range, lacking standard grade designation. Batch certificates specify exact blend.
Ferrosilicon 65% Lumpy Form FeSi65
Ferrosilicon 65% in lumpy form contains 65% silicon by weight with iron balance, typically sized 10-100mm, used in steelmaking for silicon addition and deoxidation. Classified under HTS 7202.21.50.00 as 'other' ferrosilicon with 55-80% silicon, not fitting standard granulated or specific alloy subcategories. Its irregular lump shape suits electric arc furnace feeding.
Ferrosilicon 55.5% Borderline Grade
Ferrosilicon 55.5% Grade sits at the minimum threshold with precisely 55.5% silicon by weight, used in cost-sensitive steel alloys. Falls under HTS 7202.21.50.00 as 'other' ferrosilicon >55% up to 80% Si, distinguished from ≤55% category. Tight composition control essential.
Ferrosilicon 78% High-Silicon FeSi78
Ferrosilicon 78% High-Silicon grade approaches 80% limit with 78% Si content, used for maximum deoxidation with minimal iron dilution. HTS 7202.21.50.00 'other' category for 55-80% silicon ferrosilicon. Brittle texture requires careful handling.
Ferrosilicon 75% Grade FeSi75A
Ferrosilicon 75% Grade FeSi75A is an alloy containing approximately 75% silicon and 25% iron by weight, used primarily as a deoxidizer and alloying agent in steel production. It falls under HTS 7202.21.50.00 as ferrosilicon with silicon content between 55% and 80%, classified as 'other' since it does not meet specific subheadings for standard grades. This granular or lump form alloy is essential for controlling oxygen levels in molten steel.
Ferrosilicon 60% Standard Grade FeSi60
Standard Ferrosilicon 60% contains 60% silicon by weight, balanced with iron and minor elements, commonly used in gray iron casting and mild steel production. Under HTS 7202.21.50.00, it is 'other' ferrosilicon with silicon between 55-80%, not specified under granulated or calcium-bearing types. Available in crushed or natural lump sizes.